464 
R. Scott. — On Traquairia. 
Locality : Coal-balls from the Lower Coal Measures of Lancashire and 
Yorkshire. 
The second species I propose to call Traquairia Spenceri , as it was first 
observed by the late Mr. Spencer and occurs in slides from his collection. 
Traquairia Spenceri (PI. XXXIX, Figs. 8, 9, 10 ; PI. XL, Figs. 15, 16 ; 
Text-fig. 4). 
The form is spherical. 
The spines are much more delicate and apparently less brittle than in 
T. Carruthersii , and rapidly taper to a point. At the ends they are often 
curved like a shepherd’s crook. At their 
apparent base they give a network of tubes 
much finer than in T. Carruthersii. 
Each spine has very numerous fine 
pores, from which emanate very fine 
threads. The spines are less numerous 
than in T. Carruthersii ; about twenty can 
be counted round the circumference of the 
sphere seen in median section. 
The inner capsule appears to have two 
membranes. Sometimes an operculum seems 
to be visible (see Text-fig. 4). 
The inner capsule is filled with large 
spores containing smaller ones. 
Measurements : — 
Diameter of sphere without spines : 
Length of spines : 
Width of spines at base : 
Width of gelatinous envelope : 
Diameter of large spores : 
Diameter of small spores : 
In association with Traquairia Spenceri 
(PL XXXIX, Fig. 10) which might possibly be a stage in the development of 
Traquairia , perhaps the first product of germination of a spore. It appears 
to have one spine only, the whole object being barely one-third the size 
of the usual specimens. It measures 120 ^ x 96 \x. The whip-like shape 
of the spine strongly resembles that of T. Spenceri . 
Text-fig. 4. 
Traquairia Spenceri. x 150 
about 042 mm. 
from 0*18-0*24 mm. 
24 fj. . 
o*i mm. 
from 36 ^-42 fji. 
1 8 fJL. 
I have found an object 
In the Burntisland material there are two Traquairiae very different 
in form, always occurring together. In fact, in my first investigations 
I always called them Form A and Form B. However, I have been 
unable to trace any connexion between the two, so at present they must be 
